JP2002253875A - Wire cutting device - Google Patents

Wire cutting device

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Publication number
JP2002253875A
JP2002253875A JP2001058826A JP2001058826A JP2002253875A JP 2002253875 A JP2002253875 A JP 2002253875A JP 2001058826 A JP2001058826 A JP 2001058826A JP 2001058826 A JP2001058826 A JP 2001058826A JP 2002253875 A JP2002253875 A JP 2002253875A
Authority
JP
Japan
Prior art keywords
cutting
wire
cutting member
load
stopping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001058826A
Other languages
Japanese (ja)
Other versions
JP4691805B2 (en
Inventor
Kiyoshi Hirase
清 平瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2001058826A priority Critical patent/JP4691805B2/en
Publication of JP2002253875A publication Critical patent/JP2002253875A/en
Application granted granted Critical
Publication of JP4691805B2 publication Critical patent/JP4691805B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Scissors And Nippers (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a wire cutting device capable of cutting a wire so that the wire after cutting is never bent and has a plane cut surface. SOLUTION: This wire cutting device 1 comprises a first cutting member 6 mounted in cutting so as to be located closer to a grasping means side, compared with a second cutting member 7, a stopping means 17 for stopping the rotation of the first cutting member 5 to the wire 31 in the position where it abuts on the wire 31 and a load means for imparting a load to the rotation of the second cutting member 7 to the wire 31. After the first cutting member 6 is stopped by the stopping means 17, the second cutting member 7 is rotated to cut the wire 31. According to such a structure, the wire 31 on the grasped side is never bent after cutting, and the cut surface can be made plane. Thus, a satisfactory welding state in a wire boding can be obtained, and the positioning of the cut surface to a connecting position can be facilitated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ワイヤ切断装置に
関する。
The present invention relates to a wire cutting device.

【0002】[0002]

【従来の技術】半導体素子を基板の回路電極と電気的に
接続する方法としてワイヤボンディングが広く用いられ
ている。このワイヤボンディングにおいては、ワイヤは
ワイヤボンディング装置の電極となるチャックに把持さ
れ、例えば、半導体素子の外部接続用電極等の接合物に
ワイヤの端面が押圧され、電気が導通されて溶解され、
接合物と溶接される。この状態のワイヤを上記チャック
を移動させることにより基板の回路電極等の所望の接続
点まで引き回して接合が行われる。このようなボンディ
ング動作においては、ワイヤは連続した線として供給さ
れるため、ワイヤをボンディング動作毎に切断する必要
がある。又、この切断でワイヤは、次のボンディングが
行えるようにチャックからワイヤが少し突出した状態に
なるように切断される。
2. Description of the Related Art Wire bonding is widely used as a method for electrically connecting a semiconductor element to a circuit electrode on a substrate. In this wire bonding, the wire is gripped by a chuck serving as an electrode of a wire bonding apparatus.For example, an end face of the wire is pressed against a joint such as an external connection electrode of a semiconductor element, and electricity is conducted and melted,
Welded with joint. By moving the chuck in this state by moving the chuck, the wire is routed to a desired connection point such as a circuit electrode on the substrate, and bonding is performed. In such a bonding operation, since the wire is supplied as a continuous line, it is necessary to cut the wire for each bonding operation. In addition, the wire is cut so that the wire slightly projects from the chuck so that the next bonding can be performed.

【0003】従来のワイヤ切断装置には、図4(a)及
び図4(b)に示されたような、チャック33によって
把持されたワイヤを、ペンチのように鋭角の切刃を持つ
一対の切断具41で挟み、その切刃を突き合わせること
によって切断する装置(図4(a))と、鋏のように一
対の切断具43を互いに交差させてせん断力により切断
する装置(図4(b))等がある。
A conventional wire cutting apparatus includes a pair of wires having a sharp cutting edge, such as pliers, as shown in FIGS. 4 (a) and 4 (b). An apparatus for cutting by sandwiching between cutting tools 41 and abutting the cutting blades (FIG. 4A), and an apparatus for cutting a pair of cutting tools 43 such as scissors by crossing each other by shearing force (FIG. b)) and the like.

【0004】しかしながら、ペンチ式の装置では、図4
(a)に示したようにワイヤ45の切断面が中央の盛り
上がった山形となるため、ワイヤボンディングのように
ワイヤ端面を接合物に押圧し、電気を導通させて溶解し
て溶接する場合には、溶接条件が安定せずに良好な溶接
状態が得られないという問題があった。
However, in the pliers type device, FIG.
As shown in (a), since the cut surface of the wire 45 has a convex shape at the center, the end face of the wire is pressed against the joined object to conduct electricity and melt and weld as in wire bonding. In addition, there has been a problem that the welding conditions are not stable and a good welding state cannot be obtained.

【0005】又、鋏式の装置では、図4(b)に示した
ように切断後にワイヤ47の切断面近傍の部分が切断具
43によって押されて曲がり、ワイヤ47の先端位置が
ずれてしまうため、ワイヤ47の端面を所望の接合位置
に押圧するのが困難になるという問題があった。
Further, in the scissors-type device, as shown in FIG. 4B, a portion near the cut surface of the wire 47 after being cut is pushed by the cutting tool 43 to bend, and the tip position of the wire 47 is shifted. Therefore, there is a problem that it is difficult to press the end face of the wire 47 to a desired joining position.

【0006】[0006]

【発明が解決しようとする課題】本発明は、上記問題に
鑑みてなされたもので、切断後のワイヤの曲がりがな
く、切断面が平面となるように切断可能なワイヤ切断装
置を提供する。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a wire cutting apparatus capable of cutting a wire so that a bent surface of the wire is not bent and a cut surface is flat.

【0007】[0007]

【課題を解決するための手段】本発明は、上記課題を解
決するための手段として、特許請求の範囲の各請求項に
記載されたワイヤ切断装置を提供する。
According to the present invention, there is provided, as a means for solving the above-mentioned problems, a wire cutting apparatus described in each claim.

【0008】請求項1に記載の発明によれば、第一切断
部材のワイヤへ向かう回転移動をワイヤに当接した位置
で停止させる停止手段と第二切断部材のワイヤに向かう
回転移動に負荷を与える負荷手段とが設けられているの
で、まず第一切断部材が回転移動し、停止手段により停
止されて切断されるワイヤを位置決めし、次いで第二切
断部材が回転移動して第一切断部材に交差することによ
ってワイヤにせん断力をかけて切断するという切断工程
が実現される。請求項1に記載の発明によれば、この切
断時に、第一切断部材は第二切断部材に比べて把持手段
側に位置するように取付けられているので、切断の際に
は、ワイヤの切断される部分は把持手段側において第一
切断部材によって当接支持されている。この状態で第一
切断部材の把持手段から遠い側に第二切断部材を交差さ
せてワイヤにせん断力をかけて切断するため、切断後も
把持手段に把持されている側のワイヤには曲がりがな
く、その先端部が位置決めされた位置に保持されると共
に、切断面が平面となるように切断することが出来る。
これによりワイヤボンディングにおいて、切断面が平面
であるために溶接条件が安定して良好な溶接状態が得ら
れると共に、切断面が位置決めされた位置に保持されて
いるのでワイヤの端部(切断面)の所望の接合位置への
位置合わせが容易になる。
According to the first aspect of the present invention, the stopping means for stopping the rotational movement of the first cutting member toward the wire at a position where the first cutting member abuts on the wire and the load applied to the rotational movement of the second cutting member toward the wire. Since the load means for applying is provided, first the first cutting member rotates and moves, and the wire to be cut by being stopped by the stopping means is positioned, and then the second cutting member rotates and moves to the first cutting member. The crossing step realizes a cutting step of cutting the wire by applying a shearing force. According to the first aspect of the present invention, at the time of this cutting, the first cutting member is attached so as to be located closer to the gripping means than the second cutting member. The part to be cut is abutted and supported by the first cutting member on the gripping means side. In this state, the second cutting member intersects the wire farther from the gripping means of the first cutting member and cuts by applying a shearing force to the wire, so that even after cutting, the wire on the side gripped by the gripping means has a bend. Instead, it can be cut so that its tip is held at the position where it is positioned and the cut surface is flat.
As a result, in the wire bonding, since the cut surface is flat, the welding conditions are stable and a good welding condition is obtained, and since the cut surface is held at the positioned position, the end of the wire (cut surface) Can be easily adjusted to a desired joining position.

【0009】又、請求項2に記載の発明によれば、駆動
手段がベース部材に回転可能に取付けられているため、
駆動手段は、その向きを停止手段及び負荷手段の作用と
の関係により自動的に調整されて第一切断部材及び第二
切断部材を駆動するようになるので、複雑な動力伝達機
構を付加することなく、上述したような第一切断部材に
よる位置決め後に第二切断部材が作動してワイヤを切断
するという工程が実現される。
According to the second aspect of the present invention, the driving means is rotatably attached to the base member.
The driving unit automatically adjusts its direction in relation to the operation of the stopping unit and the load unit and drives the first cutting member and the second cutting member, so that a complicated power transmission mechanism is added. Rather, a step of operating the second cutting member to cut the wire after the positioning by the first cutting member as described above is realized.

【0010】[0010]

【発明の実施の形態】以下、図面を参照して、本発明の
実施形態について詳細に説明する。尚、図面において、
同一又は類似の構成要素には共通の参照番号を付す。
Embodiments of the present invention will be described below in detail with reference to the drawings. In the drawings,
Identical or similar components are given common reference numbers.

【0011】図1は、本発明の一実施形態であるワイヤ
切断装置1の上面図である。図1で、3はベース部、5
は第一切断部材、7は第二切断部材、15は駆動手段を
示す。
FIG. 1 is a top view of a wire cutting apparatus 1 according to an embodiment of the present invention. In FIG. 1, 3 is a base part, 5
Denotes a first cutting member, 7 denotes a second cutting member, and 15 denotes a driving means.

【0012】第一切断部材5は図1に示すように全体と
してほぼ棒状の部材であり、その中央部分に取付穴(図
示なし)を有する取付突起部6を有していて、取付穴を
鉛直方向に貫通して取付けられる取付ピン13によりベ
ース部3に水平方向に回転可能に取付けられる。又、第
一切断部材5はその一端部に切刃部9を備えており、こ
の切刃部9には切断時にワイヤを受容するための切欠き
が設けられている。第一切断部材5の他方の端部は駆動
手段15の一部である動力伝達部21に取付けられる。
第二切断部材7は、第一切断部材5とほぼ同一の構成を
有しており、第一切断部材5に相対するようにして、第
一切断部材5と同様に、その中央部分に設けられた取付
突起部8の取付穴(図示なし)を鉛直方向に貫通する取
付ピン13によりベース部3に水平方向に回転可能に取
付けられる。又、第二切断部材7の一端部にも切刃部1
1が設けられ、この切刃部11も又、切断時にワイヤを
受容するための切欠きを有している。第二切断部材7の
他方の端部は、第一切断部材5と同様に駆動手段15の
一部である動力伝達部21に取付けられる。尚、本実施
形態において第一切断部材5と第二切断部材7は、ベー
ス部3を下方にして、ベース部3の上に第二切断部材7
が位置し、第二切断部材7の上に第一切断部材5が位置
するように取付けられる。つまり、第一切断部材5の切
刃部9と第二切断部材7の切刃部11が互いに交差する
ように両切断部材5、7が回転移動された場合、第一切
断部材5の切刃部9が第二切断部材7の切刃部11の上
方に位置するようにされる。
The first cutting member 5 is a substantially rod-shaped member as a whole as shown in FIG. 1, and has a mounting projection 6 having a mounting hole (not shown) at the center thereof. It is attached to the base part 3 so as to be rotatable in the horizontal direction by an attachment pin 13 which is attached so as to penetrate in the direction. The first cutting member 5 has a cutting blade 9 at one end thereof, and the cutting blade 9 is provided with a notch for receiving a wire at the time of cutting. The other end of the first cutting member 5 is attached to a power transmission unit 21 which is a part of the driving unit 15.
The second cutting member 7 has substantially the same configuration as the first cutting member 5, and is provided at the center of the first cutting member 5, similarly to the first cutting member 5 so as to face the first cutting member 5. The mounting projections 8 are mounted on the base 3 so as to be rotatable in the horizontal direction by mounting pins 13 that vertically pass through mounting holes (not shown) of the mounting protrusions 8. The cutting blade 1 is also provided at one end of the second cutting member 7.
The cutting edge 11 also has a notch for receiving the wire during cutting. The other end of the second cutting member 7 is attached to a power transmission unit 21 which is a part of the driving unit 15 similarly to the first cutting member 5. In the present embodiment, the first cutting member 5 and the second cutting member 7 are placed on the base 3 with the base 3 down.
Is mounted so that the first cutting member 5 is located on the second cutting member 7. That is, when both cutting members 5 and 7 are rotated so that the cutting blade 9 of the first cutting member 5 and the cutting blade 11 of the second cutting member 7 cross each other, the cutting blade of the first cutting member 5 The portion 9 is located above the cutting edge 11 of the second cutting member 7.

【0013】本実施形態において駆動手段15は、図1
に示したように、駆動部20と、駆動部20の駆動部分
に取付けられた動力伝達部21とから構成されており、
駆動部20の駆動部分とは反対側の部分においてベース
部3に回転可能に取付けられている。駆動部20は、動
力伝達部21に連結されている駆動部分を直線的に伸縮
させ、往復移動させる。又、動力伝達部21は、図1に
示すように3つの短い棒状部材、即ち第一部材23、第
二部材25、第三部材27が、各部材の一端で他の二つ
の部材の一端に回転可能に取付けられて構成されたもの
である。第一部材23、第二部材25、第三部材27の
他端は夫々、駆動部20の駆動部分、第一切断部材5の
端部、第二切断部材7の端部へ取付けられる。この際、
第二部材25と第一切断部材5の端部、及び、第三部材
27と第二切断部材7の端部は、夫々回転可能に取付け
られる。このような構成とすることで、駆動部20の駆
動部分の直線的移動により第一切断部材5及び第二切断
部材7を回転移動させることが可能となる。
In the present embodiment, the driving means 15 is
As shown in FIG. 1, the driving unit 20 and a power transmission unit 21 attached to the driving unit of the driving unit 20 are configured.
The drive unit 20 is rotatably attached to the base unit 3 at a portion opposite to the drive unit. The drive unit 20 linearly expands and contracts the drive unit connected to the power transmission unit 21 to reciprocate. As shown in FIG. 1, the power transmission unit 21 includes three short rod-shaped members, that is, a first member 23, a second member 25, and a third member 27 each having one end of each member and one end of the other two members. It is configured to be rotatably mounted. The other ends of the first member 23, the second member 25, and the third member 27 are attached to the driving portion of the driving unit 20, the end of the first cutting member 5, and the end of the second cutting member 7, respectively. On this occasion,
The ends of the second member 25 and the first cutting member 5 and the ends of the third member 27 and the second cutting member 7 are rotatably mounted, respectively. With such a configuration, the first cutting member 5 and the second cutting member 7 can be rotationally moved by the linear movement of the driving portion of the driving unit 20.

【0014】本実施形態のワイヤ切断装置1には更に、
停止手段17及び負荷手段19が設けられている。
The wire cutting device 1 of the present embodiment further includes
Stop means 17 and load means 19 are provided.

【0015】停止手段17は、第一切断部材5が駆動手
段15の作用によって、第一切断部材5の切刃部9が第
二切断部材7の切刃部11に接近する方向、即ち、切断
するワイヤがある場合にはそのワイヤに向かう方向に回
転移動する場合に、その回転移動が所定の位置に達した
時に第一切断部材5に当接して回転移動を制限する役割
を果たす。図1に示したように、本実施形態において停
止手段17は、第一切断部材5及び第二切断部材7が取
付けられているベース部3の上部平面に対しほぼ垂直に
延設された停止手段取付壁16に取付けられたボルト状
部材17であり、第一切断部材5の取付突起部6とは反
対側の、中央よりも駆動手段15側の部分で第一切断部
材5に当接するように配設されている。このボルト状部
材17を回転させて移動することにより第一切断部材5
との当接位置を変更し、第一切断部材5の切刃部9の停
止位置を調節することが可能である。
The stop means 17 is provided in a direction in which the cutting blade 9 of the first cutting member 5 approaches the cutting blade 11 of the second cutting member 7 by the action of the driving means 15, that is, cutting. When there is a wire to be rotated, when rotating in the direction toward the wire, when the rotational movement reaches a predetermined position, it contacts the first cutting member 5 and serves to limit the rotational movement. As shown in FIG. 1, in the present embodiment, the stopping means 17 is a stopping means extending substantially perpendicular to the upper plane of the base 3 to which the first cutting member 5 and the second cutting member 7 are attached. A bolt-like member 17 attached to the attachment wall 16, so that the portion opposite to the attachment protrusion 6 of the first cutting member 5 and closer to the driving means 15 than the center is in contact with the first cutting member 5. It is arranged. By rotating and moving the bolt-shaped member 17, the first cutting member 5
It is possible to adjust the stop position of the cutting blade 9 of the first cutting member 5 by changing the contact position of the cutting member 9.

【0016】一方、負荷手段19は、第二切断部材7が
駆動手段15の作用によって、第二切断部材7の切刃部
11が第一切断部材5の切刃部9に接近する方向、即
ち、切断するワイヤがある場合にはそのワイヤに向かう
方向に回転移動しようとする場合に、その回転移動に負
荷を与え、回転移動させようとする駆動力が所定の値に
達するまで第二切断部材7の回転移動を生じさせないよ
うにする役割を果たす。図1に示したように、本実施形
態において負荷手段19は、第一切断部材5及び第二切
断部材7が取付けられているベース部3の上部平面に対
しほぼ垂直に延設された負荷手段取付壁18と、第二切
断部材7の取付突起部8とは反対側の、中央よりも駆動
手段15側の部分との間に取付けられたばね部材19で
ある。負荷手段19としては、ばね部材以外の任意の適
切な弾性部材を用いることも出来る。
On the other hand, in the loading means 19, the direction in which the cutting edge 11 of the second cutting member 7 approaches the cutting edge 9 of the first cutting member 5 by the action of the driving means 15 in the second cutting member 7, ie, When there is a wire to be cut, when a rotational movement is performed in a direction toward the wire, a load is applied to the rotational movement, and the second cutting member is driven until the driving force to be rotated and moved reaches a predetermined value. 7 serves to prevent the rotational movement of the motor. As shown in FIG. 1, in the present embodiment, the load means 19 is a load means extending substantially perpendicular to the upper plane of the base portion 3 to which the first cutting member 5 and the second cutting member 7 are attached. A spring member 19 is mounted between the mounting wall 18 and a portion of the second cutting member 7 opposite to the mounting projection 8 and closer to the drive means 15 than the center. Any appropriate elastic member other than the spring member can be used as the load unit 19.

【0017】更に、図1に示すように、ベース部3の上
部平面上には、第一切断部材5の中央より駆動手段15
側の部分と第二切断部材7の中央より駆動手段15側の
部分との間に位置して、止め部材29が設けられてい
る。駆動手段15の駆動部分が収縮して、第一切断部材
5の切刃部9と第二切断部材7の切刃部11が互いに離
れる方向に回転移動する場合に、第一切断部材5の中央
より駆動手段15側の部分及び第二切断部材7の中央よ
り駆動手段15側の部分がこの止め部材29に当接し、
所定の位置で上記回転移動が停止する。
Further, as shown in FIG. 1, on the upper plane of the base portion 3, the driving means 15
A stop member 29 is provided between the side portion and a portion closer to the drive means 15 than the center of the second cutting member 7. When the driving part of the driving means 15 contracts and the cutting blade 9 of the first cutting member 5 and the cutting blade 11 of the second cutting member 7 rotate and move away from each other, the center of the first cutting member 5 is moved. The part closer to the driving means 15 than the part closer to the driving means 15 and the part closer to the driving means 15 than the center of the second cutting member 7 abuts on this stopper member 29,
The rotation stops at a predetermined position.

【0018】次に、図2及び図3を参照して、本実施形
態のワイヤ切断装置1の作動について説明する。図2
は、一連のワイヤ31の切断工程におけるワイヤ切断装
置1の動作を示す上面図であり、図2(a)、図2
(b)、図2(c)は夫々、開始段階、位置決め段階、
切断段階を示している。又、図3は、ワイヤ切断装置1
によるワイヤ31の切断工程を取付ピン13のところか
ら二つの切断部材5、7の切刃部9、11を有する端部
に向かって見た場合の図であり、図2の場合と同様、図
3(a)、図3(b)、図3(c)は夫々、開始段階、
位置決め段階、切断段階に対応している。図3の各図に
おいて切刃部9、11は、それぞれの切欠きの中央部で
とった断面で示されている。尚、本実施形態において
は、切断されるワイヤ31は、図3の各図に示したよう
にワイヤ切断装置1の上方に位置する把持手段としての
チャック33により鉛直方向下方に向けて把持されてい
る。
Next, the operation of the wire cutting apparatus 1 of the present embodiment will be described with reference to FIGS. FIG.
FIGS. 2A and 2B are top views showing the operation of the wire cutting apparatus 1 in a series of cutting steps of the wire 31. FIGS.
(B) and FIG. 2 (c) show the starting stage, the positioning stage,
The cutting stage is shown. FIG. 3 shows a wire cutting device 1.
FIG. 3 is a view of the cutting process of the wire 31 according to FIG. 2 when viewed from the mounting pin 13 toward the ends having the cutting blades 9 and 11 of the two cutting members 5 and 7, as in FIG. 2. 3 (a), 3 (b) and 3 (c) show the starting stage,
It corresponds to the positioning stage and the cutting stage. In each drawing of FIG. 3, the cutting blades 9 and 11 are shown in a cross section taken at the center of each notch. In the present embodiment, the wire 31 to be cut is vertically held downward by a chuck 33 as a holding means located above the wire cutting device 1 as shown in each drawing of FIG. I have.

【0019】図2(a)及び図3(a)に示された開始
段階においては、駆動手段15の駆動部20の駆動部分
が収縮した状態にあり、二つの切断部材5、7の切刃部
9、11は最も離間した状態にあって、チャック33に
より把持されたワイヤ31は二つの切刃部9、11の間
にある。この段階においてはどちらの切刃部9、11も
ワイヤ31には接触していない。
In the starting stage shown in FIGS. 2A and 3A, the driving portion of the driving section 20 of the driving means 15 is in a contracted state, and the cutting blades of the two cutting members 5, 7 are cut. The portions 9 and 11 are in the most separated state, and the wire 31 gripped by the chuck 33 is between the two cutting edge portions 9 and 11. At this stage, neither of the cutting blades 9 and 11 is in contact with the wire 31.

【0020】切断工程は、この開始段階から駆動手段1
5の駆動部20の駆動部分が伸長することにより始ま
る。駆動部20の駆動部分の伸長が始まると動力伝達部
21の作用により、二つの切断部材5、7の夫々に、各
切断部材5、7を切刃部9、11が互いに接近する方
向、即ち、切断するワイヤ31に向かう方向に回転させ
る力が作用する。しかしながら、第二切断部材7には、
上述のように負荷手段19が作用しているために回転移
動は生ぜず、駆動部20の駆動部分の伸長の初期の段階
においては第一切断部材5のみが回転移動する。この
際、駆動部分が伸長するにも拘わらず第二切断部材7が
負荷手段19の作用により移動しないので、駆動手段1
5は第一切断部材5側に僅かに回転するようにして向き
を変える。第一切断部材5の回転は、図2(b)に示す
ように、第一切断部材5が第一切断部材5の取付突起部
6とは反対側の、中央よりも駆動手段15側の部分で停
止手段17に当接するまで続く。停止手段17は、第一
切断部材5の回転移動を、図2(b)及び図3(b)に
示すように、第一切断部材5の切刃部9がワイヤ31に
当接して、ワイヤ31をチャック33の中心軸線上に位
置決めする位置で停止するように調節されている。
The cutting process starts from this starting stage by the driving means 1.
5 starts when the driving portion of the driving section 20 of FIG. When the extension of the drive portion of the drive section 20 starts, the action of the power transmission section 21 causes each of the two cutting members 5, 7 to move the respective cutting member 5, 7 in a direction in which the cutting blades 9, 11 approach each other, that is, , A force to rotate in the direction toward the cutting wire 31 acts. However, the second cutting member 7 has
As described above, since the load means 19 acts, no rotational movement occurs, and only the first cutting member 5 rotationally moves in the initial stage of extension of the drive portion of the drive section 20. At this time, since the second cutting member 7 does not move due to the action of the load means 19 even though the drive part is extended, the drive means 1
Reference numeral 5 changes the direction so as to slightly rotate toward the first cutting member 5 side. As shown in FIG. 2B, the rotation of the first cutting member 5 is caused by a portion of the first cutting member 5 closer to the driving means 15 than the center on the side opposite to the mounting protrusion 6 of the first cutting member 5. And continues until it comes into contact with the stopping means 17. The stop means 17 causes the rotational movement of the first cutting member 5 to move as shown in FIGS. 2 (b) and 3 (b) when the cutting edge 9 of the first cutting member 5 comes into contact with the wire 31. It is adjusted so as to stop at a position where the position 31 is positioned on the center axis of the chuck 33.

【0021】図2(b)及び図3(b)に示した位置決
め段階から更に駆動部20の駆動部分が伸長すると、第
一切断部材5が停止手段17に当接してそれ以上回転移
動できないために、第二切断部材7を回転させようとす
る駆動力が増加し、負荷手段19の負荷に抗して第二切
断部材7を回転させ始める。この際、駆動手段15は第
二切断部材7側へ戻って回転し、向きを変える。この第
二切断部材7の回転移動の結果、図2(c)及び図3
(c)に示したように、ワイヤ31に当接してワイヤ3
1を位置決めしている第一切断部材5の切刃部9の下、
即ちチャック33から遠い側に、第二切断部材7の切刃
部11が鉛直方向に把持されたワイヤ31を水平方向に
横断して交差し、せん断力によりワイヤ31が切断され
る。
If the driving portion of the driving portion 20 further extends from the positioning step shown in FIGS. 2B and 3B, the first cutting member 5 comes into contact with the stopping means 17 and cannot be further rotated. Then, the driving force for rotating the second cutting member 7 increases, and the second cutting member 7 starts rotating against the load of the load unit 19. At this time, the driving means 15 rotates back to the second cutting member 7 and changes its direction. As a result of the rotational movement of the second cutting member 7, FIGS.
(C) As shown in FIG.
1 below the cutting edge 9 of the first cutting member 5 positioning the
That is, on the side far from the chuck 33, the cutting blade 11 of the second cutting member 7 crosses the wire 31 held in the vertical direction in the horizontal direction, and the wire 31 is cut by the shearing force.

【0022】以上のような切断工程とすることにより、
切断後もチャック33に把持されている側のワイヤ31
aには曲がりがなく、その先端部を位置決めされたチャ
ック33の中心軸線上に保持することが出来ると共に切
断面をワイヤ31aの中心軸線に直角な平面とすること
が出来る(図3(c))。又、本実施形態のワイヤ切断
装置1においては、第一切断部材5のワイヤ31へ向か
う回転移動をワイヤ31に当接した位置で停止させる停
止手段17と第二切断部材7のワイヤ31に向かう回転
移動に負荷を与える負荷手段19とを設けると共に、駆
動手段15をベース部材3に回転可能に取付けることに
よって、複雑な動力伝達機構を付加することなく、且つ
一つの駆動手段15のみを用いて、上述したような第一
切断部材5による位置決め後に第二切断部材7が作動し
てワイヤを切断するという工程を実現している。
By performing the above cutting step,
The wire 31 on the side held by the chuck 33 even after cutting.
a has no bend, its tip can be held on the center axis of the positioned chuck 33, and the cut surface can be a plane perpendicular to the center axis of the wire 31a (FIG. 3 (c)). ). In the wire cutting device 1 of the present embodiment, the stopping means 17 for stopping the rotational movement of the first cutting member 5 toward the wire 31 at a position where the first cutting member 5 abuts on the wire 31 and the stopping means 17 toward the wire 31 of the second cutting member 7. A load means 19 for applying a load to the rotational movement is provided, and the drive means 15 is rotatably mounted on the base member 3 so that a complicated power transmission mechanism is not added and only one drive means 15 is used. After the positioning by the first cutting member 5 as described above, the step of operating the second cutting member 7 to cut the wire is realized.

【0023】以上の説明から明らかなように、本実施形
態によれば、第一切断部材5を、ワイヤ31の切断時に
第二切断部材7に比べて把持手段33側に位置するよう
に取付け、第一切断部材5のワイヤ31へ向かう回転移
動をワイヤ31に当接した位置で停止させる停止手段1
7と第二切断部材7のワイヤ31に向かう回転移動に負
荷を与える負荷手段19とを設けることによって、まず
第一切断部材5が回転移動し、停止手段17により停止
されて切断されるワイヤ31をチャック33の中心軸線
上に位置決めし、次いで第二切断部材7が回転移動して
第一切断部材5のチャック33から遠い側に、鉛直方向
に把持されたワイヤ31に対して垂直に交差することに
よってワイヤ31にせん断力をかけて切断するという切
断工程が実現され、それによって、切断後もチャック3
3に把持されている側のワイヤ31aには曲がりがな
く、その先端部を位置決めされたチャック33の中心軸
線上に保持すると共に切断面をワイヤ31aの中心軸線
に直角な平面とすることが出来る。これによりワイヤボ
ンディングにおいて、切断面が平面であるために溶接条
件が安定して良好な溶接状態が得られると共に、切断面
が位置決めされたチャック33の中心軸線上に保持され
るのでワイヤ31aの端部(切断面)の所望の接合位置
への位置合わせが容易になる。
As is clear from the above description, according to the present embodiment, the first cutting member 5 is attached so as to be positioned closer to the gripping means 33 than the second cutting member 7 when the wire 31 is cut. Stop means 1 for stopping the rotational movement of the first cutting member 5 toward the wire 31 at a position where the first cutting member 5 contacts the wire 31.
7 and the load means 19 for applying a load to the rotational movement of the second cutting member 7 toward the wire 31, so that the first cutting member 5 first rotates and is stopped by the stopping means 17 to be cut and cut. Is positioned on the central axis of the chuck 33, and then the second cutting member 7 rotates and moves vertically to the side of the first cutting member 5 far from the chuck 33, perpendicular to the wire 31 held in the vertical direction. As a result, a cutting step of cutting the wire 31 by applying a shearing force is realized.
The wire 31a on the side gripped by 3 has no bend, and its tip can be held on the center axis of the positioned chuck 33 and the cut surface can be a plane perpendicular to the center axis of the wire 31a. . Thereby, in the wire bonding, since the cut surface is flat, the welding conditions are stable and a good welding state is obtained, and the cut surface is held on the center axis of the positioned chuck 33. Positioning of the portion (cut surface) to a desired joining position is facilitated.

【図面の簡単な説明】[Brief description of the drawings]

【図1】図1は、本発明の一実施形態であるワイヤ切断
装置の上面図である。
FIG. 1 is a top view of a wire cutting device according to an embodiment of the present invention.

【図2】図2は、一連のワイヤの切断工程における図1
のワイヤ切断装置の動作を示す上面図であり、図2
(a)、図2(b)、図2(c)は夫々、開始段階、位
置決め段階、切断段階を示している。
FIG. 2 shows a series of wire cutting steps in FIG.
FIG. 2 is a top view showing the operation of the wire cutting device of FIG.
(A), FIG. 2 (b), and FIG. 2 (c) show a start stage, a positioning stage, and a cutting stage, respectively.

【図3】図3は、図1のワイヤ切断装置によるワイヤの
切断工程を両切断部材の取付ピン側から見た場合の図で
あり、図2の場合と同様、図3(a)、図3(b)、図
3(c)は夫々、開始段階、位置決め段階、切断段階に
対応している。
FIG. 3 is a view when a wire cutting process by the wire cutting apparatus of FIG. 1 is viewed from the mounting pin side of both cutting members, and is the same as FIG. 2A and FIG. 3 (b) and FIG. 3 (c) correspond to a start stage, a positioning stage, and a cutting stage, respectively.

【図4】従来技術のワイヤ切断装置によるワイヤ切断の
様子を示す図であり、図4(a)はペンチ式切断装置に
よる切断を示し、図4(b)は鋏式切断装置による切断
を示す。
FIG. 4 is a view showing a state of wire cutting by a conventional wire cutting device, wherein FIG. 4 (a) shows cutting by a pliers type cutting device, and FIG. 4 (b) shows cutting by a scissors type cutting device. .

【符号の説明】[Explanation of symbols]

1…ワイヤ切断装置 3…ベース部 5…第一切断部材 6…取付突起部 7…第二切断部材 8…取付突起部 9…切刃部 11…切刃部 13…取付ピン 15…駆動手段 16…停止手段取付壁 17…停止手段 18…負荷手段取付壁 19…負荷手段 20…駆動部 21…動力伝達部 23…第一部材 25…第二部材 27…第三部材 29…止め部材 31…ワイヤ 33…チャック DESCRIPTION OF SYMBOLS 1 ... Wire cutting device 3 ... Base part 5 ... First cutting member 6 ... Mounting projection part 7 ... Second cutting member 8 ... Mounting projection part 9 ... Cutting blade part 11 ... Cutting blade part 13 ... Mounting pin 15 ... Driving means 16 ... Mounting means mounting wall 17 ... Stopping means 18 ... Loading means mounting wall 19 ... Loading means 20 ... Drive section 21 ... Power transmission section 23 ... First member 25 ... Second member 27 ... Third member 29 ... Stopping member 31 ... Wire 33 ... Chuck

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ベース部材と、前記ベース部材に回転可
能に取付けられた第一切断部材及び第二切断部材と、前
記第一切断部材及び前記第二切断部材を回転移動させる
駆動手段とを具備し、把持手段によって把持されたワイ
ヤを切断するワイヤ切断装置において、 前記第一切断部材は、ワイヤの切断時に前記第二切断部
材に比べて前記把持手段側に位置するように取付けられ
ていることと、 前記第一切断部材のワイヤへ向かう回転移動をワイヤに
当接した位置で停止させる停止手段と前記第二切断部材
のワイヤに向かう回転移動に負荷を与える負荷手段とを
更に有していて、前記第一切断部材が前記停止手段によ
り停止された後に前記第二切断部材のワイヤへ向かう回
転移動が生じてワイヤが切断されることと、を特徴とす
るワイヤ切断装置。
A first cutting member and a second cutting member rotatably attached to the base member; and a driving means for rotating the first and second cutting members. In the wire cutting device for cutting the wire held by the holding means, the first cutting member is attached so as to be positioned closer to the holding means than the second cutting member when cutting the wire. And stopping means for stopping the rotational movement of the first cutting member toward the wire at a position in contact with the wire, and load means for applying a load to the rotational movement of the second cutting member toward the wire. Wherein the first cutting member is stopped by the stopping means and then the second cutting member is rotated toward the wire to cut the wire.
【請求項2】 前記駆動手段が前記ベース部材に回転可
能に取付けられることを特徴とする請求項1に記載のワ
イヤ切断装置。
2. The wire cutting device according to claim 1, wherein said driving means is rotatably attached to said base member.
【請求項3】 前記負荷手段が弾性部材により構成され
ることを特徴とする請求項1又は2に記載のワイヤ切断
装置。
3. The wire cutting device according to claim 1, wherein said load means is constituted by an elastic member.
JP2001058826A 2001-03-02 2001-03-02 Wire cutting device Expired - Fee Related JP4691805B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001058826A JP4691805B2 (en) 2001-03-02 2001-03-02 Wire cutting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001058826A JP4691805B2 (en) 2001-03-02 2001-03-02 Wire cutting device

Publications (2)

Publication Number Publication Date
JP2002253875A true JP2002253875A (en) 2002-09-10
JP4691805B2 JP4691805B2 (en) 2011-06-01

Family

ID=18918490

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP4691805B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101532984B1 (en) * 2013-08-28 2015-07-02 주식회사 루멘스 Trim apparatus for leadframe
JP2019141951A (en) * 2018-02-20 2019-08-29 東邦工機株式会社 Cutting machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53131959A (en) * 1977-04-22 1978-11-17 Toshiba Corp Coiling die
JPS58180664U (en) * 1982-05-28 1983-12-02 ぺんてる株式会社 Printed circuit board lead wire cutting device
JPS60171270U (en) * 1984-03-29 1985-11-13 ナショナル住宅産業株式会社 welding wire cutting device
JPH05318219A (en) * 1992-05-25 1993-12-03 Sony Corp Method and device for disposing waste material
JPH07205051A (en) * 1994-01-07 1995-08-08 Betsuseru Giken Kogyo Kk Switching action device
JPH08257260A (en) * 1995-03-28 1996-10-08 Fujitsu Ten Ltd Nipper provided with chips sucking function
JPH1032400A (en) * 1996-07-12 1998-02-03 Saitama Nippon Denki Kk Lead cutter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53131959A (en) * 1977-04-22 1978-11-17 Toshiba Corp Coiling die
JPS58180664U (en) * 1982-05-28 1983-12-02 ぺんてる株式会社 Printed circuit board lead wire cutting device
JPS60171270U (en) * 1984-03-29 1985-11-13 ナショナル住宅産業株式会社 welding wire cutting device
JPH05318219A (en) * 1992-05-25 1993-12-03 Sony Corp Method and device for disposing waste material
JPH07205051A (en) * 1994-01-07 1995-08-08 Betsuseru Giken Kogyo Kk Switching action device
JPH08257260A (en) * 1995-03-28 1996-10-08 Fujitsu Ten Ltd Nipper provided with chips sucking function
JPH1032400A (en) * 1996-07-12 1998-02-03 Saitama Nippon Denki Kk Lead cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101532984B1 (en) * 2013-08-28 2015-07-02 주식회사 루멘스 Trim apparatus for leadframe
JP2019141951A (en) * 2018-02-20 2019-08-29 東邦工機株式会社 Cutting machine

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